Eleventy

Eleventy (11ty) turns your templates into static HTML at build time, so a Formstork form drops straight into any Nunjucks or Liquid file and works with zero JavaScript.

Add the form

Save this inside a template or layout, for example contact.njk:

<form action="https://api.formstork.com/submit" method="POST">
  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">
  <label>Name <input type="text" name="name" required></label>
  <label>Email <input type="email" name="email" required></label>
  <label>Message <textarea name="message" required></textarea></label>
  <!-- Honeypot: bots fill this, humans don't. Keep it hidden. -->
  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">
  <button type="submit">Send</button>
</form>

The same markup works unchanged in a .liquid template. There are no {{ }} expressions in this form, so nothing collides with Nunjucks or Liquid syntax.

Step by step

1. Sign up at app.formstork.com and copy your free access key from the dashboard.
2. Open a Nunjucks (contact.njk) or Liquid (contact.liquid) template in your Eleventy input folder, or a shared layout under _includes.
3. Paste the form above and replace YOUR_ACCESS_KEY with your key.
4. Start Eleventy with npx @11ty/eleventy --serve and open the page in your browser.
5. Send a test message and confirm it lands in your inbox.

That is the whole setup. The form posts directly to Formstork, so there is no client-side code to ship and nothing to maintain. The free plan covers 250 submissions a month, which is plenty for most contact and feedback forms.